1. Particle contacts in discrete materials;Athanasiou-Grivas;J. Geotech. Geoenviron. Eng.,1980
2. Investigations into the deformability of rockfill;Bowling,1980
3. On the permeability of media consisting of closely packed porous particles;Brinkman;Appl. Sci. Res.,1949
4. Ventilation models for longwall gob leakage simulation;Brunner,1985
5. A theoretical approach to the evaluation of in-situ coal;Edwards;Canadian Mining and Metallurgy Bulletin,1978